C API: How much private is the private _Py_IDENTIFIER() API?

[vstinner (Victor Stinner)]

@eric.snow

including your suggestion to perhaps make argument clinic public .

Update in this area: Argument Clinic now supports the limited C API, see:

• Issue: https://github.com/python/cpython/issues/108494
• Issue: https://github.com/python/cpython/issues/85283
• Discussion: Use the limited C API for some of our stdlib C extensions

The C code generated by Argument Clinic is currently less efficient than the code targeting the internal C API (faster APIs), but there is room for improvement (since we know how to make it faster with the internal C API).